package io;



import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class FISDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis =new FileInputStream("./fos.dat");

        int d=fis.read();
        System.out.println(d);//1
         d=fis.read();
        System.out.println(d);//2
         d=fis.read();
        System.out.println(d);//-1
        fis.close();
    }
}
